Interchangeable engine.



E. M. OORYELL. v

INTERQHANGEABLE ENGINE.

I APPLICATION FILED JULY 24,1908. 1,000,584; Patented Aug. 15, 1911.

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IN TEROHANGBABLE ENGINE. APPLICATION FILED JULY 24,1908.

1,000,584. Patented Aug. 15, 1911.

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EDWIN M. GORYELL, OF PASSAIG, NEW JERSEY, ASSIGNOR TO JULIA E. CAMERON,

- OF NEW YORK, N. Y.

INTERGHANGEABLE ENGINE.

T 0 all whom it may concern:

Be it known that I, EDWIN M. CoRYELL, a citizen of the United States of America, and resident of Passaic, New Jersey, have invented a new and useful Interchangeable Engine, which invention is fully set forth in the following specification.

The invention relates to steam or air driven direct-acting horizontal or vertical pumps and comprises the combination with a comparatively large steam-cylinder, and a comparatively small steam-cylinder, arranged tandem, ofsuitable ports, passageways, and valves whereby either of the two cylinders may be operated while the other is idle, or both may be operated together wit-h the same pressure, or one may be operated as a high-pressure cylinder and the other as a low-pressure cylinder constituting a compound engine.

The construction is adapted for use with any fluid such as steam or compressed air, etc., but for the sake of clearness I shall describe it as for a steam-engine.

The invention will be best understood by reference to the annexed drawings that illustrate preferred embodiments thereof.

''In the drawings Figure 1 is a side elevation of a vertical sinkingpump having my improvements connected thereto; Fig. 2 is a front elevation of the same; and Fig. 3 is a section through steam-cylinders and passageways of any general construction of di rect-acting steam-pumps, horizontal or vertical, embodying my invention.

Referring to Figs, 1 and 2, 1 indicates the pump as a whole, of the well-known Cameron type, as illustrated in my Patent No. 753,550, granted March 1, 1904:. 2 is the larger steam-cylinder, and 3 its valve-chest; 1 the smaller steam-cylinder, and 5 its valvechest; 6-6 is a body-piece or cradle as a spacing device; and 7 the piston-rod that connects the pistons of the two steam-cylinders 2 and 4.

The construction illustrated in Figs. 1 and 2 is provided with the usual rings, rods, hooks, etc., for suspending the entire apparatus in the shaft or mine.

Referring now to Fig. 3, 8 represents the piston in the larger cylinder 2, and 9 the piston in the smaller cylinder 4:, the two pistons being fast on their common rod 7 that leads to the pump-plunger (not shown in Fig. 10 is the steam-pipe having a Specification of Letters Patent.

Application filed. July 24, 1908.

Patented Au 15, 1911.

Serial No. 445,205.

branch leading to each of thevalve-chests 3 and 5, and provided with the valve 11 which, when in the position shown in Fig. 3, cuts off the connection to the lower valvechest 3, while permitting steam to enter the upper chest 5. This valve 11 when moved all the way down to its left-hand seat cuts oil the passage to chest 5, while admitting steam to chest 3; and the same valve 11 when in an intermediate position permits steam under the same'pressure to pass to both the valve-chests 3 and 5. In the steamchest 5 is the usual slide-valve 12, actuated in the usual manner; and the two inletports 141t lead to opposite ends of the cylinder. A similar slide-valve and inletports are provided in the valve-chest 3 of the larger steam-cylinder. '15 is the exhaust from the smaller cylinder which passes through to exhaust-outlet 18, or through a suitable passage 16 to the main steam-pipe 10 and thence to-the valve-chest '3. In this branch-passage 16 is located the valve 17, which in the position shown cuts off the passage to the main pipe 10 and larger cylinder 2,leaving the exhaust open to the air at 18. This valve 17 when moved all the way down to its left-hand seat closes the outlet 18 and admits the steam through branchpipe 16 to main pipe 10, and thence to the valve-chest 3 and the steam-cylinder 2, whence it ultimately escapes through exhaust 19. Instead of the usual drain-cocks at each end of the cylinders 2 and 4:, I provide openings considerably larger than those ordinarily provided for drainage, with the cocks 2020 and 2121 respectively.

In Fig. 3 valve 11 is shown as closing the passage to the larger cylinder 2 while admitting steam to the smaller cylinder 4; valve 17 is shown as cutting off the passage of exhaust-steam from cylinder 4: to cylinder 2, permitting the steam to pass to the air at 18; cocks 20 are closed and cooks 21 are opened. As the result of thisarrangement, the piston 9 is actuated in the obvious manner, while the piston 8 is reciprocating idly. The smaller cylinder 4 only is being operated. In order to operate the larger cylinder 2 alone, the valve 11 is screwed down to its seat (at the left), valve 17 remains at its uppermost position to close the passage 16 and leave outlet 18 open, cocks 20 are opened, and cocks 21 are closed. Steam from pipe 10 can not pass into the valve-chest 5, nor can it escape through branch 16, but passes directly to valve-chest 3 and actuates piston 8 in the obvious manner, while piston 9 is reciprocating idly. In order to operate the two cylinders With high-pressure steam (or, with steam under the same pressure), the valve 11 is adjusted to its mid-way position so that the steam in pipe 10 can have two passages, one to the left into valve-chest 5, and the other down into valve-chest 3. Valve 17 remains in its uppermost position; and all four of the cocks 20 and 21 are closed. Steam entering valve-chest 5 actuates piston 9 and escapes through outlet 18, while the steam entering valve-chest 3 act'uates piston 8 and escapes through the exhaust 19. To operate the two cylinders as a compound engine, valve 11 is brought to the right (the position shown in Fig. 3) valve 17 is screwed down to its extreme position; while cocks 20 and 21 are all of them closed. Steam from pipe 10 passes to the left into valve-chest 5, and after actuating the piston 9 passes as exhauststeam through port 15 and branch-pipe 16, to the valve-chest 3 and the larger cylinder 2, whence it escapes through exhaust 19. This great flexibility of use of my improved engine is of great utility. In sinking a shaft where water is to be pumped out as the shaft is deepened, only the smaller cylinder 4 would be employed for the first two or three hundred feet, say; then between, say, two hundred and fifty and five hundred feet depth, only the larger cylinder 2 would be employed; and for depths below five hundred feet both the cylinders could be used with steam at high pressure, or they could be used together to constitute a compound engine, as circumstances may make desirable.

While I refer to my invention as a steamengine having steam-cylinders, etc., it is obvious that it may be employed with co1npressed air or with other fluid mediums. It is also apparent to those skilled in the art that the construction of the valves in the chests 3 and 5, and also of the Valves 11 and 17 may be varied, and likewise the arrangement of the steam passages and ports may be modified considerably, without in any case departing from the spirit of my invention.

Having thus described my invention, I claim:

An interchangeable engine comprising the combination of a large and a small cylinder arranged tandem and with their pistons on the same rod, of a pipe having a branch leading directly to the valve-chest of each cylinder, a three-way valve controlling said branches, a second pipe leading directly from the exhaust of the smaller cylinder to communicate with the valve-chest of the larger cylinder, said second pipe having an outlet to the air, a two-way valve controlling said second ipe and its outlet, and a stop-cock at each end of each cylinder.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

EDWIN M. CORYELL.

Witnesses:

RALPH L. Scor'r, JOSEPHINE T. JAuoKEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

